Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1991-08-12
1993-02-09
Heller, Gregory A.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Oxygen containing
423321R, 210733, C01B 2516, B01D 2101, B03D 300, C02F 100
Patent
active
051851350
ABSTRACT:
A digested slurry from a wet process phosphoric acid production process is dewatered by gravity-assisted vacuum filtration using as a filtration aid an aqueous solution of a polymeric filtraton aid that has been subjected to high shear mixing to enhance the performance of the filtration aid and enhance the filtration.
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"Coagulation and Flocculation", Nalco Water Handbook, Second Ed., 1988, McGraw-Hill Book Co., pp. 8.3 to 8.23.
"Phosphates, Phorphorus; Fertilizers, Potassium Salts, Natural Organic Fertilizers, Urea", J. Q. Hardesty and L. B. Hein, Riegel's Handbook of Industrial Chemistry, Van Nostrand Reinhold Co., 1974, pp. 537 to 548.
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Literature Search Report No. 3558, pp. 1-18, Mar. 1991.
Connelly Lawrence J.
Gustafson William K.
Pillai Krishnan J.
Barrett Joseph B.
Heller Gregory A.
Miller Robert A.
Nalco Chemical Company
Norek Joan I.
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